Wireless noise-cancelling earplug
AssigneeQon Oy
InventorsJanne Kyllönen, Matti Nisula, Pekka Sarlund
Life of this patent
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Abstract
A wireless noise-cancelling earplug includes a housing within which at least an active noise cancellation (ANC) circuit for producing anti-noise, a speaker for emitting the anti-noise as a sound wave, and a battery for powering at least the ANC circuit. The earplug further includes an audio cavity for guiding the sound wave from the speaker out of the earplug, at least one microphone for measuring ambient noise and feeding the measured ambient noise to the ANC circuit, and a passive noise reduction unit for blocking ambient noise.
Claims18
A wireless noise-cancelling earplug comprising:
- a housing comprising a first cylindrical part and a second cylindrical part, within which an active noise cancellation (ANC) circuit configured to produce anti-noise, a speaker configured to emit the anti-noise as a sound wave, and a battery configured to power the ANC circuit are arranged;
- a sealing bud disposed about a portion of the second cylindrical part of the housing, the sealing bud and the housing forming a passive noise reduction unit configured to fully occlude an ear canal;
- an audio cavity configured to guide the sound wave from the speaker out of the earplug;
- at least one microphone configured to measure ambient noise and to feed the measured ambient noise to the ANC circuit,
- wherein the earplug and the housing as viewed from one side is L-shaped comprising a stem portion that extends between outer extremities of the housing along a first axis and a bar portion that extends between an outer extremity of the housing and an outermost point of the passive noise reduction unit, wherein:
- the stem portion has a length of 25 mm or less;
- the bar portion has a length of 23 mm or less;
- and
- an inner angle between the first axis and the second axis is 85 to 120 degrees, wherein at least the ANC circuit, the speaker, and a first part of the audio cavity are arranged within the second cylindrical part.
A wireless noise-cancelling earplug comprising:
- a housing comprising a first cylindrical part and a second cylindrical part, within which an active noise cancellation (ANC) circuit configured to produce anti-noise, a speaker is configured to emit the anti-noise as a sound wave, and a battery is configured to power the ANC circuit;
- a sealing bud disposed about a portion of the second cylindrical part of the housing, the sealing bud and the housing forming a passive noise reduction unit configured to fully occlude an ear canal;
- an audio cavity configured to guide the sound wave from the speaker out of the earplug;
- at least one microphone configured to measure ambient noise and to feed the measured ambient noise to the ANC circuit,
- wherein the earplug and the housing as viewed from one side is L-shaped comprising a stem portion that extends between outer extremities of the housing along a first axis and a bar portion that extends between an outer extremity of the housing and an outermost point of the passive noise reduction unit, and
- wherein at least the ANC circuit, the speaker, and at least a first part of the audio cavity are arranged within the second cylindrical part.
Dependencies are inferred from the claim text.